CN112111112B - High-elasticity rubber and plastic gloves containing magnetic microcapsules and preparation method thereof - Google Patents
High-elasticity rubber and plastic gloves containing magnetic microcapsules and preparation method thereof Download PDFInfo
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- CN112111112B CN112111112B CN202010969351.9A CN202010969351A CN112111112B CN 112111112 B CN112111112 B CN 112111112B CN 202010969351 A CN202010969351 A CN 202010969351A CN 112111112 B CN112111112 B CN 112111112B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/0055—Plastic or rubber gloves
- A41D19/0058—Three-dimensional gloves
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/0055—Plastic or rubber gloves
- A41D19/0082—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/14—Dipping a core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/4842—Outerwear
- B29L2031/4864—Gloves
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/01—Magnetic additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/02—Applications for biomedical use
Abstract
The invention relates to a high-elasticity rubber and plastic glove containing magnetic microcapsules and a preparation method thereof. The glove has a film thickness of 0.06-0.15 mm, a tensile strength of more than 13MPa, an elongation of more than 400% and a pinhole rate of less than 4, and can be used in the fields of food processing, medical treatment and pharmacy.
Description
Technical Field
The invention relates to a preparation method of disposable high-elasticity rubber and plastic gloves (rubber and polyvinyl chloride are blended) containing magnetic microcapsules, and the gloves can be detected by a metal detector, and belongs to the technical field of polymer processing.
Background
At present, the disposable gloves mainly comprise latex gloves, butyronitrile gloves, PVC gloves and PE gloves. Wherein disposable gloves are highly appreciated by consumers in developed countries. But no market of a certain size has yet developed in developing countries. Along with the development of national economy in development, the demand of disposable gloves must steadily increase, the global pandemic of novel coronaviruses in 2020 promotes the global capacity expansion of the glove industry, after epidemic situations, the disposable gloves will steadily increase along with the improvement of consciousness of people on health protection, and more industries adopt disposable gloves during processing. In the practical application process, some special industries have requirements on some characteristics of gloves, for example, in the fields of food, medical treatment, pharmacy and the like, broken fragments of the gloves can be detected and cannot enter terminal products, and therefore, the butyronitrile gloves and the PVC gloves containing magnetic metal powder are produced.
Patent CN105451584B is a patent about metal detector detection gloves, which mainly introduces a series of problems in the implementation process, such as easy sedimentation of metal particles, need of vigorous stirring, easy generation of pinholes, and mechanical property degradation of processed gloves, etc., when magnetic metal particles are added to rubber or resin to make magnetic rubber gloves and magnetic resin gloves.
The invention aims to provide a high-elasticity disposable rubber and plastic glove (rubber and resin blending) which can be detected by a metal detector and a corresponding preparation method, wherein the prepared glove does not generate pinholes and keeps good mechanical properties.
Disclosure of Invention
In order to solve the problems, the invention prepares the disposable PVC gloves by dissolving nitrile rubber by a plasticizer, then adding the nitrile rubber into a mixture containing the plasticizer, a heat stabilizer, a viscosity reducer, a vulcanizing agent and PVC paste resin, mixing to prepare an oily solution, and finally adding magnetic polymer microspheres into the oily solution to prepare an oily impregnation solution.
The hand feeling and wearing comfort of the gloves produced by the invention are better than those of common magnetic PVC gloves, the breaking elongation of the gloves is 400-500%, the mechanical strength of the gloves is higher than that of the common magnetic PVC gloves by more than 20%, the pinhole rate is low, and the gloves can be used for medical purposes.
The more specific technical scheme of the invention is as follows: firstly, dissolving nitrile rubber by adopting a plasticizer under the stirring action, standing for a period of time, then adding the nitrile rubber into PVC paste resin containing the plasticizer, a heat stabilizer, a viscosity reducer, a vulcanizing agent and a high-speed shearing and stirring agent to prepare oily prepreg, continuously stirring, and defoaming by using a defoaming agent or vacuum defoaming. And conveying the material to a secondary stirring kettle after defoaming, adding the polymer magnetic microspheres, stirring at a low speed for 1 hour, and conveying the mixture to a gum dipping tank for later use. Then the high-elastic rubber-plastic gloves containing the magnetic microcapsules are produced by the following processes: dipping, drying, plasticizing, surface treating, lip curling, cooling, demoulding, packaging and warehousing.
The magnetic high-elasticity rubber-plastic gloves with excellent performance are prepared by a simple and feasible synthesis process, and reasonable raw material proportion needs to be selected, so that material sticking and plasticizing are carried out under the control of a proper temperature condition.
(1) Raw material
The raw materials mainly comprise the following components:
pvc paste resin: a series of pvc paste resins with a degree of polymerisation between 1300 and 1900.
Nitrile butadiene rubber: liquid nitrile rubbers of various molecular weights, and uncrosslinked solid nitrile rubbers.
Magnetic microcapsule: the microcapsule of ferromagnetic substance coated by polymer is preferably polystyrene magnetic microsphere, more preferably polystyrene magnetic microsphere coated by ferromagnetic substance such as ferroferric oxide, and the particle diameter of microsphere is below 5 μm.
Plasticizer: diisononyl phthalate (DINP), dioctyl phthalate (DOP), dimethyl phthalate, dibutyl phthalate, and phthalates and aliphatic dicarboxylates including dioctyl adipate, dimethyl adipate, dibutyl sebacate, dioctyl sebacate, epoxidized soybean oil, epoxidized butyl fatty acid, epoxidized fatty acid esters of octyl fatty acid, phosphates including triphenyl phosphate, tricresyl phosphate, diphenylisooctyl phosphate, diphenylisodecyl phosphate, or phenyl alkylsulfonate, 2,2,4-trimethyl-1,3-pentanediol diisobutyrate, dioctyl terephthalate (DOTP), DINCH, chlorinated plasticizers, or a mixture of one or more thereof.
A stabilizer: metal soaps such as barium stearate, calcium stearate, zinc stearate, aluminum stearate and the like, and one or more of liquid calcium zinc stabilizer and organic tin stabilizer.
Vulcanizing agent: one or two of di-tert-butyl cumyl peroxide, tert-butyl hydroperoxide, di-tert-butyl peroxide and the like are compounded.
Viscosity reducer: hydrocarbon solvent oils (C6-C8), 2.2.4-trimethyl-1.3-pentanediol diisobutyrate, and the like.
(2) Oily prepreg formula
100 parts of PVC paste resin
Liquid nitrile rubber: 2 to 10 portions of
60-90 parts of plasticizer
5-10 parts of magnetic microcapsule
1-3 parts of stabilizer
Vulcanizing agent: 0.02-1 part
Viscosity reducer: 20-60 parts of
(3) Production process of oily prepreg emulsion
Adding PVC paste resin, a plasticizer, liquid nitrile rubber, a stabilizer, a vulcanizing agent and a viscosity reducer in the amount shown by an oily prepreg formula into a stirring kettle, starting a stirrer, quickly stirring (the rotating speed is 1000-1500 r/min) for 2 hours, inputting the mixture into a storage tower by using a pump for vacuum defoaming or static defoaming and defoaming of a defoaming agent for 36 hours for standby, then inputting the mixture into a 2-time batching tank, adding magnetic microcapsules, stirring at a low speed (the rotating speed is 200-400 r/min) for 1 hour, and then pumping the mixture into a prepreg tank by using the pump for standby (the mixture cannot stand for a long time, and the production is started within 1 hour).
The viscosity reducer can be added in two times, an oily prepreg adding part is prepared, and the other part is added when the magnetic microcapsules are added.
(4) Production process of magnetic high-elasticity rubber-plastic gloves
The forming process of the magnetic high-elasticity rubber-plastic glove is shown in figure 1:
the ceramic hand mold is firstly pre-impregnated in a pre-impregnation tank for 10 +/-6 seconds (adjusted according to the final glove film thickness), dried and plasticized (190 +/-10 ℃ and 6-14min of plasticizing time), subjected to surface treatment, lip curling, cooled and demoulded to obtain the nitrile rubber modified PVC glove.
The invention also discloses the glove prepared by the preparation method of the high-elasticity rubber-plastic glove containing the magnetic microcapsules.
The thickness of the glove film is 0.06-0.15 mm. The tensile strength of the glove film is more than 13MPa, the elongation is more than 400%, and the pinhole rate is less than 4.
The invention also claims the application of the gloves prepared by the preparation method of the high-elasticity rubber-plastic gloves containing the magnetic microcapsules, which are used for food processing, medical sanitation and pharmacy.
The main advantages of the method
1. The product has good hand feeling, wearing comfort superior to that of the traditional magnetic PVC gloves, and low pinhole rate, and can be used for medical purposes.
2. The breaking elongation is higher than that of the common magnetic PVC gloves, and the breaking elongation is between 400 and 500 percent.
3. The tensile strength is higher than that of the common magnetic PVC gloves, and the mechanical strength is higher than that of the common magnetic PVC gloves by more than 20%.
4. The degree of solvent resistance is higher than that of the common magnetic PVC gloves.
5. The processability is better than that of the common magnetic PVC gloves (the density is low, the requirement on stirring is not high, and the natural dipping and stirring of the hand model of the common production line can be realized without changing equipment).
Drawings
FIG. 1 is a flow chart of an embodiment of the dip forming process of the disposable high elastic rubber plastic glove containing magnetic microcapsules of the present invention.
Detailed Description
The present invention will be described in detail below with reference to examples and comparative examples, but the examples should not be construed as limiting the scope of the present invention.
Example 1: a preparation method of high-elasticity rubber-plastic gloves containing magnetic microcapsules comprises the following steps:
adding 100 parts of pvc paste resin, 60 parts of plasticizer (dioctyl phthalate (DOP), 1 part of stabilizer (calcium stearate), 0.05 part of vulcanizing agent (dicumyl peroxide), 5 parts of liquid nitrile rubber and 30 parts of viscosity reducer (2,2,4-trimethyl-1,3-pentanediol diisobutyrate: hydrocarbon solvent oil = 3:1) into a stirring kettle, starting the stirrer, quickly stirring (the rotating speed is 1000-1500 r/min) for 2 hours, pumping the prepreg into a storage tower by a pump, carrying out vacuum defoaming for 36 hours for storage, inputting the prepreg into a secondary batching stirring kettle after defoaming, adding 8 parts of magnetic microcapsules, supplementing 10 parts of viscosity reducer 2,2,4-trimethyl-1,3-pentanediol diisobutyrate: hydrocarbon solvent oil = 3:1), stirring at a low speed for 1 hour (the rotating speed is 200-400 r/min), and finally inputting the prepreg into a gum dipping tank for standby.
And (3) allowing the ceramic hand mold to enter a PVC prepreg emulsion groove for pre-dipping for 6 seconds, plasticizing at 200 ℃ for 8min after material dipping, and then performing lip rolling, surface treatment, lip rolling, cooling and packaging to obtain the high-elasticity rubber and plastic gloves containing the magnetic microcapsules. The glove film has a thickness of 0.07 mm, a tensile strength of 13.2MPa, and an elongation at break of 450%.
Example 2:
adding 100 parts of pvc paste resin, 60 parts of plasticizer (dioctyl phthalate (DOP), 1 part of stabilizer (calcium stearate), 0.05 part of vulcanizing agent (dicumyl peroxide), 5 parts of liquid nitrile rubber and 30 parts of viscosity reducer (2,2,4-trimethyl-1,3-pentanediol diisobutyrate: hydrocarbon solvent oil = 3:1) into a stirring kettle, starting the stirrer, quickly stirring (the rotating speed is 1000-1500 r/min) for 2 hours, pumping the prepreg into a storage tower by a pump, carrying out vacuum defoaming for 36 hours for storage, inputting the prepreg into a secondary batching stirring kettle after defoaming, adding 5 parts of magnetic microcapsules, supplementing 10 parts of viscosity reducer 2,2,4-trimethyl-1,3-pentanediol diisobutyrate: hydrocarbon solvent oil = 3:1), stirring at a low speed for 1 hour (the rotating speed is 200-400 r/min), and finally inputting the prepreg into a gum dipping tank for standby.
And (3) allowing the ceramic hand mold to enter a PVC prepreg emulsion groove for pre-dipping for 6 seconds, performing plasticization at 200 ℃ after material dipping for 8min, and performing lip curling, surface treatment, lip curling, cooling and packaging to obtain the high-elasticity rubber-plastic glove containing the magnetic microcapsules. The glove film has a thickness of 0.07 mm, a tensile strength of 13.8MPa, and an elongation at break of 485%.
Example 3:
adding 100 parts of pvc paste resin, 60 parts of plasticizer (dioctyl phthalate (DOP), 1 part of stabilizer (calcium stearate), 0.05 part of vulcanizing agent (dicumyl peroxide), 5 parts of liquid nitrile rubber and 25 parts of viscosity reducer (2,2,4-trimethyl-1,3-pentanediol diisobutyrate: hydrocarbon solvent oil = 3:1) into a stirring kettle, starting the stirrer, quickly stirring (the rotating speed is 1000-1500 r/min) for 2 hours, pumping the prepreg into a storage tower by a pump, carrying out vacuum defoaming for 36 hours for storage, inputting the prepreg into a secondary batching stirring kettle after defoaming, adding 10 parts of magnetic microcapsules, supplementing 15 parts of viscosity reducer 2,2,4-trimethyl-1,3-pentanediol diisobutyrate: hydrocarbon solvent oil = 3:1), stirring at a low speed for 1 hour (the rotating speed is 200-400 r/min), and finally inputting the prepreg into a gum dipping tank for standby.
And (3) allowing the ceramic hand mold to enter a PVC prepreg emulsion groove for pre-dipping for 6 seconds, plasticizing at 200 ℃ for 8min after material dipping, and then performing lip rolling, surface treatment, lip rolling, cooling and packaging to obtain the high-elasticity rubber and plastic gloves containing the magnetic microcapsule particles. The glove film has a thickness of 0.07 mm, a tensile strength of 13.0MPa, and an elongation at break of 410%.
Comparative example 1:
adding 100 parts of pvc paste resin, 60 parts of plasticizer (dioctyl phthalate (DOP), 1 part of stabilizer (calcium stearate), 0.05 part of vulcanizing agent (di-tert-butylperoxycumin), 5 parts of liquid nitrile rubber and 30 parts of viscosity reducer (2,2,4-trimethyl-1,3-pentanediol diisobutyrate: hydrocarbon solvent oil = 3:1), starting a stirrer, stirring rapidly (the rotating speed is 1000-1500 r/min) for 2 hours, pumping the prepreg into a storage tower by a pump, defoaming for 36 hours for standby, inputting the prepreg into a secondary batching stirring kettle after defoaming, supplementing 8 parts of viscosity reducer 2,2,4-trimethyl-1,3-pentanediol diisobutyrate: hydrocarbon solvent oil = 3:1), stirring at low speed for 1 hour (the rotating speed is 200-400 r/min), and finally inputting the prepreg into a glue dipping tank for standby.
And (3) allowing the ceramic hand mould to enter a PVC prepreg emulsion groove for pre-dipping for 6 seconds, performing plasticization at 200 ℃ after material dipping for 8min, and performing lip rolling, surface treatment, lip rolling, cooling and packaging to obtain the common nitrile rubber modified PVC gloves. The glove film had a thickness of 0.07 mm, a tensile strength of 14.5MPa, and an elongation at break of 490%.
Comparative example 2:
adding 100 parts of pvc paste resin, 60 parts of plasticizer (dioctyl phthalate (DOP), 1 part of stabilizer (calcium stearate), 0.05 part of vulcanizing agent (dicumyl peroxide), 5 parts of liquid nitrile rubber and 30 parts of viscosity reducer (2,2,4-trimethyl-1,3-pentanediol diisobutyrate: hydrocarbon solvent oil = 3:1) into a stirring kettle, starting the stirrer, quickly stirring (the rotating speed is 1000-1500 r/min) for 2 hours, pumping the prepreg into a storage tower by using a pump, carrying out vacuum defoaming for 36 hours for storage, inputting the prepreg into a secondary batching stirring kettle after defoaming, adding 10 parts of magnetic metal powder particles, supplementing 12 parts of viscosity reducer 2,2,4-trimethyl-1,3-pentanediol diisobutyrate: hydrocarbon solvent oil = 3:1), stirring at low speed for 1 hour (the rotating speed is 200-400 r/min), and finally inputting the prepreg into a gum dipping tank for standby.
And (3) allowing the ceramic hand mold to enter a PVC prepreg emulsion groove for pre-dipping for 6 seconds, performing plasticization at 200 ℃ after material dipping for 8min, and performing lip curling, surface treatment, lip curling, cooling and packaging to obtain the high-elasticity rubber-plastic gloves containing magnetic particles. The glove film has a thickness of 0.07 mm, a tensile strength of 12.1MPa, and an elongation at break of 360%.
TABLE 1 film Performance testing
The invention has the advantages that the performance of the high-elasticity rubber-plastic gloves containing magnetic microcapsules prepared by the invention is better than that of the gloves produced by the traditional process, the solvent resistance of the gloves is increased, the magnetic microcapsules are effectively added so that the gloves can be detected by a metal detector, in addition, as the magnetic microcapsules are adopted, the outer layer of the microcapsules is a polymer which is not easy to phase separate with main components of the gloves (PVC paste resin and nitrile rubber) to generate pinholes and the like, in addition, as the microcapsules are adopted instead of metal powder, the density of the gloves is greatly reduced, the processing difficulty is reduced, and from the data, the high-elasticity rubber-plastic gloves added with the magnetic microcapsules have better solvent resistance than the high-elasticity rubber-plastic gloves added with the magnetic metal powder, but the solvent resistance of the high-elasticity rubber-plastic gloves added with the magnetic microcapsules is slightly worse than that of the high-elasticity rubber-plastic gloves not added with the magnetic microcapsules.
The above description is only a preferred embodiment of the present invention, and these embodiments are based on different implementations of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A preparation method of rubber and plastic gloves containing magnetic microcapsules comprises the steps of stirring nitrile rubber, a vulcanizing agent, a viscosity reducer, a heat stabilizer, PVC paste resin and a plasticizer together to prepare a prepreg, filtering the prepreg, defoaming in vacuum, and stirring for the second time to add the magnetic microcapsules to prepare the high-elasticity rubber and plastic gloves containing the magnetic microcapsules; the method is characterized in that: the magnetic microcapsule is magnetic microsphere of ferromagnetic substance coated by polystyrene, and the vulcanizing agent is one or two of di-tert-butyl cumyl peroxide, tert-butyl hydroperoxide and di-tert-butyl peroxide;
the nitrile rubber is liquid nitrile rubber;
wherein the mass ratio of the using amount of each component is PVC paste resin: plasticizer: liquid nitrile rubber: magnetic microcapsule: viscosity reducer: thermal stabilizer: vulcanizing agent =100:60-90:2-10:5-10:20-50:1 to 3:0.02-1.
2. The method of claim 1, wherein: the ferromagnetic substance is ferroferric oxide.
3. The method of claim 1, wherein: the grain diameter of the magnetic microsphere is less than 5 mu m.
4. The method of claim 1, wherein: the plasticizer is selected from one or more of phthalate plasticizer, aliphatic diacid ester plasticizer, epoxy fatty acid ester plasticizer, phosphate plasticizer, alkyl phenyl sulfonate, 2,2,4-trimethyl-1,3-pentanediol diisobutyrate, dioctyl terephthalate (DOTP), DINCH and chlorine-containing plasticizer.
5. The method of claim 4, wherein: the phthalate plasticizer includes dioctyl phthalate (DOP), dibutyl phthalate, diisononyl phthalate (DINP) and dimethyl phthalate; the aliphatic diacid ester plasticizer comprises dioctyl adipate, dimethyl adipate, dibutyl sebacate and dioctyl sebacate; the epoxy fatty acid ester plasticizer comprises epoxy soybean oil, epoxy fatty acid butyl ester and epoxy fatty acid octyl ester; the phosphate plasticizer comprises triphenyl phosphate, tricresyl phosphate, diphenyl isooctyl phosphate and diphenyl isodecyl phosphate.
6. The method of claim 1, wherein: the viscosity reducer is one or two of hydrocarbon solvent oil 2,2,4-trimethyl-1,3-pentanediol diisobutyrate.
7. The method of claim 6, wherein: the carbon chain length of the hydrocarbon solvent oil is 6 to 8 carbons.
8. The glove produced by the production method according to any one of claims 1 to 7, wherein: the thickness of the glove film is 0.06-0.15 mm, the tensile strength is more than 13MPa, the elongation is more than 400%, and the pinhole rate is less than 4.
9. Use of the glove of claim 8 for food processing, medical hygiene and pharmaceuticals.
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| CN114015087A (en) * | 2021-11-16 | 2022-02-08 | 安徽和佳医疗用品科技有限公司 | High-elasticity rubber and plastic gloves containing magnetic microcapsules and preparation method thereof |
| CN114133638A (en) * | 2021-12-13 | 2022-03-04 | 东营九洲奥华化工有限责任公司 | Chemical corrosion resistant butyronitrile latex for disposable gloves and preparation method thereof |
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| CN102336988A (en) * | 2011-08-15 | 2012-02-01 | 江苏尤佳手套有限公司 | Environmentally-friendly polyvinyl chloride/nitrile butadiene rubber (PVC/NBR) composite gloves |
| CN102825699A (en) * | 2012-09-14 | 2012-12-19 | 江苏尤佳手套有限公司 | Disposable 4G highly elastic gloves processing process |
| WO2014200047A1 (en) * | 2013-06-14 | 2014-12-18 | ミドリ安全株式会社 | Glove and production process therefor |
| CN106147079B (en) * | 2016-07-30 | 2018-01-30 | 山东蓝帆新材料有限公司 | Soft highly-elastic PVC glove |
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